Title:
PRODUCTION METHOD OF BENTONITE MOLDED BODY, DRYER, AND DRYING METHOD
Document Type and Number:
Japanese Patent JP2016083871
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing a bentonite molded body in which drying shrinkage is allowed to proceed under drying rate conditions according to particle size of pellets, and to provide a dryer and a drying method.SOLUTION: The production method of a bentonite molded body comprises a drying step where pellets are allowed to dry and shrink by feeding dry air having a low relative humidity into a cylindrical vessel 12 from one end side in the axial direction of the cylindrical vessel 12 and discharging passing air from the other end to outside, while rotating and mixing pellets to be dried, charged inside the cylindrical vessel 12 arranged horizontally, by rotating the vessel around its axis. The drying conditions when drying by the drying step is set so that a drying rate condition for the pellets, v D, becomes 80 or less, where an average size of the pellet and a moisture content are denoted by D (mm) and an actual value, respectively, and a rate of water content decrease, v (1/Hr), is taken as a value calculated by v=(w-w)/t from a drying time, t (Hr), from an initial water content of wto a water content win a course of drying.SELECTED DRAWING: Figure 7-1
Inventors:
ISHII TAKU
ISHII SO
ISHII SO
Application Number:
JP2014218740A
Publication Date:
May 19, 2016
Filing Date:
October 27, 2014
Export Citation:
Assignee:
SHIMIZU CONSTRUCTION CO LTD
International Classes:
B28B1/00; C04B33/30; G21F9/36
Domestic Patent References:
| JP2011242289A | 2011-12-01 | |||
| JPH02118393A | 1990-05-02 |
Other References:
中島均 他１名: "湿潤ベントナイトペレットの２段階乾燥実験", 土木学会平成２６年度全国大会第６９回年次学術講演会講演概要集, JPN6016018880, 2014, pages 41 - 42
中島均、齊藤亮: "乾燥収縮を利用したベントナイトペレットの製造方法における乾燥条件の検討", 第４９回地盤工学研究発表会, JPN6018005480, July 2014 (2014-07-01), JP, pages 341 - 342
中島均、齊藤亮、石井卓: "乾燥収縮を利用したベントナイトペレットの製造方法", 第４８回地盤工学研究発表会, JPN6018005481, July 2013 (2013-07-01), JP, pages 463 - 464
中島均、齊藤亮: "乾燥収縮を利用したベントナイトペレットの製造方法における乾燥条件の検討", 第４９回地盤工学研究発表会, JPN6018005480, July 2014 (2014-07-01), JP, pages 341 - 342
中島均、齊藤亮、石井卓: "乾燥収縮を利用したベントナイトペレットの製造方法", 第４８回地盤工学研究発表会, JPN6018005481, July 2013 (2013-07-01), JP, pages 463 - 464
Attorney, Agent or Firm:
Hiroaki Sakai
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